Time for Lithium House

dhays said:

I had issues with the Orion today. At some point, I blew the 60a MRBF on the output side. The Orion worked great before, but not at all today so the fuse was blown before I started. Idiot that I am, I don’t have a spare, and since I don’t know why or when it blew I’m not going to put a 300a fuse that I have on it. So that is still something to work out.

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just checked the manual..says 60-70. I guess 70 it is.

None of us, including yours truly, are immune from being cheap when the downside is known, mitigated, and limited.

I would have likely done the same thing and made sure that the terminal squeeze was done right. Nothing wrong with 95mm2 conductors, just unusual, that is why I asked.

Take the $200 that was saved and enjoy a fine dinner with those that you love. Great job!

WRT the blown 60 Amp fuse, at this level of current I seldom use a fuse. You can get a Blue Seas 187 series (Edit) 70 A CB on Amazon for about $80. Or about a third of that price for a knock off, which I have never used.
Provided it is downstream from a class T fuse you are fine with the Blue Seas (really a Bussmann) product.

Barking Sands said:

just checked the manual..says 60-70. I guess 70 it is.

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Yeah, I will replace with a 70a if I can.

Edit: MRBFs aren’t available in 70a. They are in 75a, so I’ll go with that.

luna said:

WRT the blown 60 Amp fuse, at this level of current I seldom use a fuse. You can get a Blue Seas 187 series (Edit) 70 A CB on Amazon for about $80. Or about a third of that price for a knock off, which I have never used.
Provided it is downstream from a class T fuse you are fine with the Blue Seas (really a Bussmann) product.

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I would use a CB other than space is really at a premium. The MRBF is convenient. Except of course when it blows. Lol

rslifkin said:

Repeat after me. Lithium Iron Phosphate batteries (which are the kind used as house batteries in a boat) are not the same lithium batteries you find in a cell phone, power tools, etc. LFP doesn't have the same concerns around thermal runaway, etc.

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How about Mercedes? They don't know what they are doing?

What type of chemistry did they use?

Brooksie said:

How about Mercedes? They don't know what they are doing?

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This is ignorant fear mongering. The automotive industry does not use LifePo4. The chemistry does not work for their power needs.

Ignorant fear mongering has been very, very good to me. In 2013, a Tesla caught fire near Seattle. Made national news. Tesla stock dropped. I was sitting in my down town office and Googled "car fires" and saw the number of gasoline vehicles that caught fire every year (usually static sparks when refueling, caught on the service stations security camera, and now shown on YouTube). Who knew that car fires happened regularly hundreds, maybe thousands, of times a year? I knew that gasoline powered cars always burst into flame in crashes (as shown in the movies), but it's actually more common when refueling. The insurance companies must not know this!!!! The public needs to be warned!!!!!

But I thought to myself, was there a way to make money on ignorance? Yes, of course. I bought Tesla stock. Tesla stock has not only recovered, it has increased 1,500% since then. Put that in your 401K.

I didn't keep my Tesla stock for the full 10 years. It became obvious that the CEO of Tesla is also subject to ignorant fear mongering. That spooked me after a few years. Still, ignorant fear mongering helped with my early retirement, boat purchase, second home, etc. (including new electric vehicle).

tiltrider1 said:

This is ignorant fear mongering. The automotive industry does not use LifePo4. The chemistry does not work for their power needs.

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This is just wrong.
Most Auto makers (GM, VW, BMW, Mercedes, Tesla etc.) use LiFepo4 in their lower end or standard range vehicles.

The vehicle that burnt likely had a NMC battery onboard.

luna said:

This is just wrong.
Most Auto makers (GM, VW, BMW, Mercedes, Tesla etc.) use LiFepo4 in their lower end or standard range vehicles.

The vehicle that burnt likely had a NMC battery onboard.

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So what you are saying is that while some LiFePo4 batteries might be found on some cars they are not the cause of these fires.

Not really.

What I am saying is that there are lots of auto manufactures that are using LiFePO4 in their current models.

Tesla said a year ago +/- that almost half of their unit production used LiFePO4.

It looks like the burnt Benz might be an EQA 250. Up until the end of 2023 Benz used a NCM battery in this model. Starting in 2024 they switched (like a lot of other brands) to a LiFePO4 battery.

I don't know exactly what model or year the car was, do you?